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441704 (2009 AP9)
Classification: Main-belt Asteroid          SPK-ID: 2441704
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1984786798417782 6.9568e-08  
a 2.470117876185092 2.861e-08 au
q 1.979852141066298 1.7031e-07 au
i 10.36699414115744 1.6586e-05 deg
node 289.2789000573811 7.5804e-05 deg
peri 147.9200250891299 9.5633e-05 deg
M 359.5848589614642 6.1384e-05 deg
tp 2459002.135189582089
(2020-Jun-01.63518958)
0.0002418 TDB
period 1417.995801206264
3.88
2.4636e-05
6.745e-08
d
yr
n .2538794541519476 4.4109e-09 deg/d
Q 2.960383611303886 3.4289e-08 au
  Orbit Determination Parameters
   # obs. used (total)      101  
   data-arc span      3955 days (10.83 yr)  
   first obs. used      2008-12-02  
   last obs. used      2019-10-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .68619  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 15:59:04  

Additional Information
 Earth MOID = 1.00358 au 
 Jupiter MOID = 2.30163 au 
 T_jup = 3.435 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.3   n/a MPO495189  

441704 (2009 AP9)          Discovered 2008-Dec-02 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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